21220-93-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 21220-93-9 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 2,1,2,2 and 0 respectively; the second part has 2 digits, 9 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 21220-93:
(7*2)+(6*1)+(5*2)+(4*2)+(3*0)+(2*9)+(1*3)=59
59 % 10 = 9
So 21220-93-9 is a valid CAS Registry Number.
InChI:InChI=1/C11H25NO4S2/c1-16-10-7-5-3-2-4-6-8-12-9-11-17-18(13,14)15/h12H,2-11H2,1H3,(H,13,14,15)